I think it's a cockerel - you should be able to tell for sure in a week or two - just watch for the comb to change color or for the wattles to get any bigger.
Like 2 of the other posters, your chick's comb is bigger than my 2 leghorn pullets' combs at 7-8 weeks of age (see picts).
Like 2 of the other posters, your chick's comb is bigger than my 2 leghorn pullets' combs at 7-8 weeks of age (see picts).

